Lena and Jack split up after five years together Picture: Jason Merritt/Getty Images for The Rape Foundation)

The 33-year-old said: ‘normally i would never address rumors but i resent having the most important friendships and working relationships in my life reduced to dumb hetero normative gossip. those relationships are deeply important and sacred. with that said, im not seeing anyone. lol.’

Jack produced much of Lorde’s Grammy-nominated album Melodrama and they are close friends.

The 31-year-old wrote in Vogue: ‘He reminds me again and again that I am still a woman and still alive. But I also know that soon — for so many reasons that have nothing to do with my uterus — we’ll slip away from each other and I will face everything I am losing in impossibly tiny steps.’

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